President Donald Trump says duty kept him away from his son’s wedding this weekend. Mary Trump says it’s because “he can’t stand his kid.”Mary Trump unloaded on both her uncle and cousin during a Friday appearance on The Dean Obeidallah Show, dismissing Trump’s explanation for missing Donald Trump Jr.’s Bahamas wedding to Palm Beach socialite Bettina Anderson.The president could not clear his schedule to attend his son's wedding to Bettina Anderson. Kevin Lamarque/REUTERS “While I very much wanted to be with my son, Don Jr., and the newest member of the Trump Family, his soon-to-be wife, Bettina, circumstances pertaining to...